The table below shows the right ascensions of two stars at a location. Name of star Right ascension (in hours)
Star 1 1
Star 2 3

What is the interval between the times when the two stars cross the meridian at the location?
1 hour
2 hours
3 hours
5 hours

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Failure to accomplish erikson’s psychosocial task of late adulthood leads to despair. a. true b. false